well, this inoperable wipers has my car all balled up in passing inspection, besides actually needing them to see with all the crap falling from the sky here in the Northeast. Anyway I took the STS to the garage, 2 weeks ago, who has worked on my Deville in the past. Anyway they bought a new motor assembly, still no work, then they tried to order a new stalk switch, and they said they are discontinued, so I bought a ebay special and that did not fix it either, that was a week and a half ago, they still have it and the mechanic is stumped, 26 year master mechanic. So does anyone have any idea what else could be blocking current to the motor from the wiper switch? does the circuit go right from ignition voltage to the column switch and then directly to the wiper motor? it seems the pulse current that excites the pulse board is not doing its job to tell the pulse board to send 12V to the wiper motor,, It also does not pass 12v to the washer squirter either. there is 12V at the harness side of the connector at the wiper motor, and good ground, and you can jump the connector.